Some basic marksmanship instruction would help you.
But I get the feeling you're not serious about this question.
So you christians think its better that your bullet kill the person rather than just put the perp down. You'd be disappointed to hear the perp was going to survive. Yes or no?
Sigh.
OK, I know you're just being sophomoric for the fun of it. Or you've been drinking. Two threads with the same topic. I'm going for drinking too much to give you the benefit of the doubt. Cheers. Go pour another one and after I finish typing, I'll top off my wine glass and join you.
Shooting a pistol is hard. A pistol barrel is short and the sights are very close together meaning a millimeter of aim off target equals a huge miss distance at even close ranges. I take it you may not know about the fundamentals of marksmanship: Stance, Grip, Sight Picture, Breath Control and Trigger Pull.
Now factor in fear. One common training technique at the pistol range to factor in fear is to have a trainee do a series of jumping jacks prior to taking aim and shooting. The exercise demonstrates that when your heart is pumping and your breathing is hard as it would be when you're in mortal danger, your arms and hands would be shaking and your target sight picture would be blurred. The solution that some here have been trying to tell you is to counter this anxiety induced instability is to always aim for center mass. If you miss a little, you may still wing the attacker. In a state of anxiety, if you shoot for the leg or arm of an attacker, you could easily miss and become a victim.
It has nothing to do with Christianity. It has to do with self preservation. You're drunk. Stop typing.
That covers self defense with a pistol and the professional training responsible pistol shooters have. Now if you're using a high powered rifle with a scope to assassinate someone who is not threatening you, then as a Christian, you'll have some splain'in to do when you meet our Maker. But a Christian wouldn't do something like that.